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Question: Math

Solve by completing the square. x^2 + 2x = 3

Holt McDougal Larson Algebra 1 Common Core Edition page 608 number 12

In Math | Asked by Dee Dee
Asked from the Algebra study pack
Answers
x^2 + 2x = 3
x^2+2x+1=3+1
x^2+2x+1=4
x^2           +2x              +1=4
(x   )(x   )                (   +1)(   +1)
(x+1)(x+1)=4
Check:
(x+1)(x+1)=4
(x)(x)   (x)(1)  (1)(x)  (1)(1)=4
x^2              2x            1    =4
x^2+2x+1=4
Therefore:

(x+1)^2=4

(x+1)^2-4=0

CherieS | 389 days ago